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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/2599

Title: Green forming with nanoparticles
Authors: Liang, Yuncheng
Gregory, N.
Binner, J.G.P.
Keywords: Die pressing
Colloidal processing
Polyelectrolyte
Zeta potential
Viscosity
Issue Date: 2004
Publisher: © Trans Tech
Citation: LIANG, GREGORY and BINNER, 2004. Green forming with nanoparticles. Key Engineering Materials, 264-268, pp. 2319-2322
Abstract: The potential for green forming with nanosized yttria-doped, partially stabilised zirconia (YPSZ) powder using both uniaxial compaction and colloidal suspensions has been investigated. Green compacts were fabricated from a Y-PSZ nanopowder, a submicron powder of similar composition and combinations of the two by die pressing at varying axial stress, with the effect of a micronising milling process on the green density also being examined. Results indicated that the incorporation of the nanopowder into the submicron powder increased green density by up to 17% whilst micronising helped to achieve green densities as high as 60% of theoretical, even with the pure nanopowder. The zeta potential, viscosity and mean particle size of two different Y-PSZ nanosuspensions were measured for two different anionic polyelectrolytes, polyacrylic acid (PAA) and polymethacrylic acid (PMAA). The results showed that both led to flocculation under acidic conditions and hence increasing viscosity with increasing polyelectrolyte concentration.
Description: This is Restricted Access. This article was published in the journal, Key Engineering Materials [© Trans Tech] and is available at: www.scientific.net.
URI: https://dspace.lboro.ac.uk/2134/2599
ISSN: 1013-9826
Appears in Collections:Closed Access (Materials)

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